錯誤添加一個影片剪輯，在AS3中增加了更多的影片剪輯自

Question

package 
{ 
    import flash.display.*; 

    public class documentclass extends MovieClip 
    { 
     public var playscreen:avoiderclass; 

     public function documentclass() 
     { 
      playscreen.addEventListener(playerEvent.DEAD, onplayerdeath); 
      playscreen.x = 0; 
      playscreen.y = 0; 
      playscreen = new avoiderclass(); 
      addChild(playscreen); 
     } 
     public function onplayerdeath(PlayerEvent:playerEvent):void 
     { 
      var Gameover:gameover = new gameover(); 
      Gameover.x = 0; 
      Gameover.y = 0; 
      addChild(Gameover); 

      playscreen = null; 
     } 
    } 

} 

好，它工作時，舞臺（這類）是拉玩家和敵人的影片剪輯到它的類。然後我添加了這個舞臺，併爲另一個播放屏幕... 我不知道爲什麼它不工作，但任何人都可以給我任何可能性，爲什麼它不會，沒有錯誤彈出... ...

Answer 1

你必須可變播放屏幕設置這樣一個新的avoiderclass對象：

 playscreen = new avoiderclass(); 

前做..

 playscreen.addEventListener(playerEvent.DEAD, onplayerdeath); 
     playscreen.x = 0; 
     playscreen.y = 0; 

請嘗試這種方式。

public class documentclass extends MovieClip { 
    public var playscreen:avoiderclass; 

    public function documentclass(){ 
     // construct the object first 
     playscreen = new avoiderclass(); 
     // then manipulate it. 
     playscreen.addEventListener(playerEvent.DEAD, onplayerdeath); 
     playscreen.x = 0; 
     playscreen.y = 0; 
     addChild(playscreen); 
    } 

在這裏，在功能不要忘記從顯示列表

public function onplayerdeath(PlayerEvent:playerEvent):void { 
     var Gameover:gameover = new gameover(); 
     Gameover.x = 0; 
     Gameover.y = 0; 
     addChild(Gameover); 
     // first remove the playscreen from display list 
     removeChild(playscreen); 
     // then set it to null, now really unreachable and eligible for gc 
     playscreen = null; 
    } 
    } 
}